Peter Krause and Lauren Graham
The quirky single mother from the show The Gilmore Girls is way less outspoken than her onscreen counterpart, especially when it comes to love and relationships. Thank goodness, actors only portray certain personas, otherwise, Graham would be dating her brother. Jip, Lauren, and Peter were brother and sister in the series and fell deeply in love while working on set. Both of them were in dead-end relationships when their relationship just happened, according to Graham. She did, however, spill the secret to their happiness and that is communication. Lauren even said that Peter is her favorite person to talk to.